C312312111133131121333133313113313331333133313331333133313331333132313123231221   >>    C31231211113313112133313331311331333133313331333133313331333133313231312323122   <<    C312312111133131121333133313113313331333133313331333133313331333132313123231223   >>      C312312111133131121333133313113313331333133313331333133313331333132313123231222   >>